【开发心得】在SpringBoot体系中正确使用redisConfig

一、代码示例redis配置package com.xxx.xxx.config.redis; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.SerializationFeature; import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule; import org.msgpack.jackson.dataformat.MessagePackFactory; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.data.redis.connection.RedisConnectionFactory; import org.springframework.data.redis.connection.RedisStandaloneConfiguration; import org.springframework.data.redis.connection.lettuce.LettuceClientConfiguration; import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.data.redis.core.StringRedisTemplate; import org.springframework.data.redis.serializer.StringRedisSerializer; import java.time.Duration; Configuration public class RedisConfig { Value(${spring.redis.host}) private String HOSTNAME; Value(${spring.redis.port}) private int PORT; Value(${spring.redis.database}) private int DATABASE; Value(${spring.redis.password}) private String PASSWORD; Value(${spring.redis.timeout}) private long TIMEOUT; Bean public RedisConnectionFactory redisConnectionFactory() { RedisStandaloneConfiguration config new RedisStandaloneConfiguration(); config.setHostName(HOSTNAME); config.setPort(PORT); config.setDatabase(DATABASE); config.setPassword(PASSWORD); LettuceClientConfiguration clientConfig LettuceClientConfiguration.builder() .commandTimeout(Duration.ofMillis(TIMEOUT)) .build(); return new LettuceConnectionFactory(config, clientConfig); } Bean public StringRedisTemplate stringRedisTemplate(Qualifier(redisConnectionFactory) RedisConnectionFactory redisConnectionFactory) { StringRedisTemplate template new StringRedisTemplate(); template.setConnectionFactory(redisConnectionFactory); return template; } Bean public RedisTemplateString, byte[] messagePackRedisTemplate(Qualifier(redisConnectionFactory) RedisConnectionFactory redisConnectionFactory) { RedisTemplateString, byte[] template new RedisTemplate(); template.setConnectionFactory(redisConnectionFactory); template.setKeySerializer(new StringRedisSerializer()); template.setEnableDefaultSerializer(false); return template; } Bean public ObjectMapper messagePackObjectMapper() { return new ObjectMapper(new MessagePackFactory()) .registerModule(new JavaTimeModule()) .disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS); } /** * * RedisTemplateString,Object */ Bean public RedisTemplateString, Object redisTemplate(Qualifier(redisConnectionFactory) RedisConnectionFactory connectionFactory) { RedisTemplateString, Object redisTemplate new RedisTemplate(); redisTemplate.setKeySerializer(new StringRedisSerializer()); redisTemplate.setHashKeySerializer(new StringRedisSerializer()); redisTemplate.setHashValueSerializer(new StringRedisSerializer()); redisTemplate.setConnectionFactory(connectionFactory); return redisTemplate; } }application.ymlspring: redis: #数据库索引 database: 0 host: localhost port: 6379 password: 你的密码 #连接超时时间 timeout: 5000jackson配置package com.xxxx.config.json; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.SerializationFeature; import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder; Configuration public class JsonConfig { Bean public ObjectMapper objectMapper() { return Jackson2ObjectMapperBuilder.json() .featuresToDisable(SerializationFeature.FAIL_ON_EMPTY_BEANS) .featuresToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS) .modules(new JavaTimeModule()) .build(); } }二、详解1. 为什么单独配置messagePack?为了在Redis中使用MessagePack进行高效序列化。MessagePack是二进制序列化格式比JSON序列化/反序列化速度更快数据体积更小节省30-50%空间特别适合Redis这种内存数据库节省内存2. Java8时间支持.registerModule(new JavaTimeModule())让ObjectMapper能正确处理LocalDateTime、LocalDate等Java 8时间类型否则序列化时会抛异常3. 为什么单独json的禁用特性.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS)日期不序列化为时间戳如1633046400000而是序列化为可读格式如2021-10-01T00:00:00便于调试和跨语言兼容